Quiz 1

Which of the following statements about valence electrons is true?

• Valence electrons are found in the innermost energy level.

• Valence electrons are the only electrons that can form chemical bonds.

• Valence electrons have the least energy of all electrons.

• Valence electrons are the electrons closest to the nucleus.

If an atom has 3 valence electrons, how many bonds can it typically form?

• 3

• 6

• 2

• 3

What is the significance of unpaired dots in an electron dot diagram?

• They determine the mass of the atom.

• They represent the energy levels of the electrons.

• They show how many bonds an atom can form.

• They indicate the total number of electrons in the atom.

What does an electron dot diagram represent?

• The total number of electrons in an atom

• The mass of an atom

• The arrangement of protons in the nucleus

• The valence electrons of an atom

How are elements arranged in the periodic table?

• Randomly without any specific order

• In alphabetical order

• By their color and size

• By atomic number in periods and groups

What is a common misconception about metals?

• Metals are poor conductors of electricity.

• All metals are solid at room temperature.

• Metals are found only on the left side of the periodic table.

• Metals can be easily shaped into sheets.

How many unpaired valance are there in Nitrogen?

• 2

• 3

• 5

• 7

Which statement about nonmetals is true?

• They do not conduct electricity well and are often gases.

• They are usually solid and malleable.

• They are good conductors of electricity.

• They are mostly liquids

Which part of the atom is gained, shared or lost when forming a chemical bond?

• Neutron

• Electron

• Proton

• Nucleus

Which of one of these statements are NOT true about noble gases.

• They have 8 valence electrons

• They are very stable.

• They easily bond with other atoms

• All the dots are pared in the diagram